WO2007142004A1

WO2007142004A1 - Drainage water-treating method and drainage water-treating apparatus

Info

Publication number: WO2007142004A1
Application number: PCT/JP2007/060125
Authority: WO
Inventors: Kazuyuki Yamasaki; Kazuyuki Sakata; Kazumi Chuhjoh; Masaki Kataoka
Original assignee: Sharp Kabushiki Kaisha
Priority date: 2006-06-07
Filing date: 2007-05-17
Publication date: 2007-12-13
Also published as: US20090250396A1; JP3974928B1; KR20090018639A; TW200812922A; KR101066050B1; JP2007326008A; TWI359116B

Abstract

Drainage water containing an organofluorine compound is introduced into a micro-nanobubbling tank (1) wherein a microorganism is added thereto from a microorganism tank (61) while a micro-nanobubbling auxiliary agent is added thereto from an auxiliary agent tank (50). Further, a nutrient is added thereto from a nutrient tank (52) and micro-nanobubbles are generated thereinto by a micro-nanobubbling machine (23), thereby giving treated water. This treated water is fed from the micro-nanobubbling tank (1) to an active carbon column (4) and then the above-described organofluorine compound contained in the treated water is decomposed by the microorganism as described above.

Description

Specification

Waste water treatment method and waste water treatment equipment

Technical field

[0001] The present invention relates to a wastewater treatment method and a wastewater treatment apparatus not only in a semiconductor factory and a liquid crystal factory but also in a factory that manufactures or uses an organic fluorine compound.

Background art

[0002] Organofluorine compounds are chemically stable substances. In particular, the organic fluorine compounds have excellent properties from the viewpoints of heat resistance and chemical resistance, and are therefore used for applications such as surfactants.

[0003] However, since the organic fluorine compound is a chemically stable substance, it is difficult to be decomposed by microorganisms. For example, perfluorootatasulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) as the above organic fluorine compounds are concerned about their impact on the ecosystem because they do not decompose in the ecosystem. In other words, the perfluorooctasulfonic acid (PFOS) and the perfluorooctanoic acid (PFOA) are chemically stable, and therefore require a high temperature of about 1000 ° C. or higher to be thermally decomposed (Japanese Patent Laid-Open No. 2005-260688). (See 2001 302551).

Disclosure of the invention

Problems to be solved by the invention

[0004] Accordingly, an object of the present invention is to provide a wastewater treatment method and a wastewater treatment apparatus capable of effectively decomposing a hardly decomposable organic fluorine compound by a microorganism. Means for solving the problem

[0005] In order to solve the above problems, the wastewater treatment method of the present invention comprises:

In the micro / nano bubble generation tank, microorganisms, micro / nano bubble generation aids and nutrients are added to the waste water containing the organic fluorine compound, and micro nano bubbles are added to prepare water to be treated.

The treated water is supplied to an activated carbon tower filled with activated carbon, and the organic fluorine compound in the treated water is decomposed by the microorganism. [0006] Here, the micro-nano bubble refers to a bubble having a diameter of about 10 μm force and several hundred nm. The above-mentioned micro / nano bubble generation aid means one that can stably maintain the generation state of micro / nano bubbles. The nutrient is a nutrient necessary for microorganisms to become active. Examples of the organic fluorine compound include perfluorooctasulfonic acid (PFOS) and perfluorooctanoic acid (PFOA).

[0007] According to the wastewater treatment method of the present invention, in the micro / nano bubble generation tank, microorganisms, micro / nano bubble generation aids and nutrients are added to the waste water containing the organic fluorine compound and the micro / nano bubbles are contained. The treated water is prepared, the treated water is supplied to an activated carbon tower filled with activated charcoal, and the organofluorine compound in the treated water is decomposed by the microorganisms. It can be propagated on the activated carbon of the activated carbon tower, which is an immobilizing carrier for the microorganisms, and further activated by the micro-nano bubbles and the nutrient, so that the organic fluorine compound can be rationally decomposed. In addition, by adding the above-mentioned micro / nano bubble generation aid, an optimal amount of the micro / nano bubbles that activate the microorganism can be generated.

Accordingly, a hardly decomposable organic fluorine compound (for example, perfluorooctasulfonic acid)

(PFOS) and perfluorooctanoic acid (PFOA)) can be effectively decomposed by microorganisms.

[0009] Further, the waste water treatment apparatus of the present invention,

A micro-nano bubble generation tank that houses a micro-nano bubble generator;

A microorganism tank containing microorganisms and connected to the micro / nano bubble generation tank;

An auxiliary agent tank containing an auxiliary agent for generating micro / nano bubbles and connected to the micro / nano bubble generating tank;

A nutrient tank containing the nutrient and connected to the micro / nano bubble generation tank;

An activated carbon tower charged with activated carbon and connected to the micro / nano bubble generation tank,

Wastewater containing organic fluorine compounds is introduced into the micro / nano bubble generation tank. When the microorganism is added from the microorganism tank, the micro-nano bubble generation assistant is added from the assistant tank, and the nutrient is added from the nutrient tank, the micro-nano bubbles are generated by the micro-nano bubble generator. Contained, treated water is created,

The treated water is supplied to the activated carbon tower, and the organic fluorine compound in the treated water is decomposed by the microorganism.

[0010] Here, the micro-nano bubble refers to a bubble having a diameter of about several hundred nm even with a 10 μm force. The above-mentioned micro / nano bubble generation aid means one that can stably maintain the generation state of micro / nano bubbles. The nutrient is a nutrient necessary for microorganisms to become active. Examples of the organic fluorine compound include perfluorooctasulfonic acid (PFOS) and perfluorooctanoic acid (PFOA).

[0011] According to the wastewater treatment apparatus of the present invention, the wastewater containing a micro-nano bubble generation tank, a microorganism tank, an auxiliary agent tank, a nutrient tank, and an activated carbon tower and containing an organic fluorine compound is Introduced into the nanobubble generation tank, the microbe, the micronanobubble generation aid and the nutrient are added, and the micronanobubbles are contained to prepare the water to be treated. Since the organofluorine compound in the treated water supplied to the activated carbon tower is decomposed by the microorganism, the microorganism is propagated on the activated carbon of the activated carbon tower, which is an immobilization carrier for the microorganism, and It can be further activated by micro-nano bubbles and the above nutrients, and the organic fluorine compounds can be reasonably decomposed. In addition, by adding the micro-nano bubble generation aid, an optimal amount of the micro-nano bubbles that activate the microorganisms can be generated.

Therefore, a hardly decomposable organic fluorine compound (for example, perfluorooctasulfonic acid)

[0013] Further, in the wastewater treatment apparatus of one embodiment,

An exhaust gas treatment tank containing a micro / nano bubble generator and connected to the micro / nano bubble generation tank; A microorganism tank that contains microorganisms and is connected to the exhaust gas treatment tank; an auxiliary tank that contains the micro-nano bubble generating aid and is connected to the exhaust gas treatment tank;

A nutrient tank containing the nutrient and connected to the exhaust gas treatment tank,

The water introduced into the exhaust gas treatment tank is added with the microorganisms from the microorganism tank, the auxiliary tank power is also added with the micro / nano bubble generation aid, and the nutrient agent is added to the nutrient tanker. In addition, the micro / nano bubble generator contains micro / nano bubbles to create washing water,

The exhaust gas generated by decomposing the organofluorine compound in the water to be treated by the microorganisms in the activated carbon tower is introduced into the exhaust gas treatment tank and treated with the washing water.

[0014] According to the wastewater treatment apparatus of this embodiment, the exhaust gas treatment tank, the microorganism tank, the auxiliary agent tank, and the nutrient tank, the water introduced into the exhaust gas treatment tank, Since the microorganism, the micro-nano bubble generation aid and the nutrient are added and the micro-nano bubble is contained, the washing water is prepared, and the exhaust gas is treated with the washing water. Fluorine can be reasonably treated by the activated microorganisms in the wash water.

[0015] In addition, the wastewater treatment apparatus of one embodiment includes an aeration unit and a relay tank connected to the activated carbon tower and the exhaust gas treatment tank, and the treated water that has passed through the activated carbon tower and the above-mentioned The exhaust gas is introduced into the relay tank and separated into the water to be treated and the exhaust gas, and the exhaust gas is introduced into the exhaust gas treatment tank.

[0016] According to the wastewater treatment apparatus of this embodiment, the treated water and the exhaust gas that have passed through the activated carbon tower are introduced into the relay tank having the aeration unit, and the treated water, the exhaust gas, Therefore, the water to be treated and the exhaust gas can be reliably treated separately.

[0017] In the wastewater treatment apparatus of an embodiment,

The exhaust gas treatment tank is A lower water storage part that is disposed in the lower part and houses the micro / nano bubble generator and stores the washing water;

An upper watering part that is disposed at the upper part and sprays the washing water pumped from the lower water storage part;

Have

The washing water sprayed from the upper watering part cleans the exhaust gas, is stored in the lower water storage part, and is pumped up again to the upper watering part.

[0018] According to the waste water treatment apparatus of this embodiment, the cleaning water sprayed from the upper watering part is washed with the exhaust gas, stored in the lower water storage part, and pumped up again to the upper watering part. Therefore, the washing water can be circulated between the upper watering part and the lower water storage part.

[0019] In the wastewater treatment apparatus of one embodiment, a filler is accommodated in the micro / nano bubble generation tank.

[0020] According to the wastewater treatment apparatus of this embodiment, since the filler is accommodated in the micro / nano bubble generation tank, the microorganisms activated by the micro / nano bubbles are propagated while being fixed to the filler. Can be made.

[0021] Further, in the wastewater treatment apparatus of one embodiment, a micro / nano bubble generator is accommodated in the relay tank.

[0022] According to the waste water treatment apparatus of this embodiment, since the micro / nano bubble generator is accommodated in the relay tank, the microorganisms in the water to be treated are activated in the relay tank, and the activity is increased. The organofluorine compound remaining in the water to be treated can be further decomposed by the microorganism that has been contaminated.

[0023] Further, in the wastewater treatment apparatus of one embodiment, the relay tank contains a filler.

[0024] According to the waste water treatment apparatus of this embodiment, since the filler is accommodated in the relay tank, the microorganisms activated by the micro-nano bubbles are used for the filler as the fixed carrier. The culture can be performed at a high concentration, and the treatment efficiency of the treated water can be increased.

[0025] In one embodiment of the waste water treatment apparatus, the filler is filled with polyvinylidene vinylidene. It is a material.

[0026] Here, the shape of the polyvinyl chloride polyvinylidene filler is, for example, a string shape or a ring shape.

[0027] According to the wastewater treatment apparatus of this embodiment, since the filler is a polyvinylidene chloride filler, microorganisms activated in the polysalt vinylidene filler can be cultured at a high concentration, The organic fluorine compound can be subjected to primary treatment.

[0028] In the wastewater treatment apparatus of one embodiment, the polysalt vinylidene filler has a string shape.

[0029] According to the waste water treatment apparatus of this embodiment, since the polyvinyl chloride polyvinylidene filler has a string shape, many of the polyvinyl chloride polyvinylidene fillers are transferred to the micro-nano bubble generation tank and the relay. It can be accommodated in a tank.

[0030] Further, in the wastewater treatment apparatus of one embodiment, the water to be treated separated in the relay tank is treated with chelate resin.

[0031] According to the waste water treatment apparatus of this embodiment, the water to be treated separated in the relay tank is treated with chelate resin, so that low concentration fluorine in the water to be treated in the relay tank is used. Can be highly treated with the above chelating resin.

[0032] In one embodiment, the filler is activated carbon.

[0033] Here, the activated carbon is accommodated in, for example, a mesh bag, and a mesh tube is installed between the adjacent mesh bags.

According to the wastewater treatment apparatus of this embodiment, since the filler is activated carbon, the organic fluorine compound adsorbed on the activated carbon can be decomposed with activated microorganisms.

. That is, the activated carbon can be regenerated by the activated microorganism.

[0035] In one embodiment of the wastewater treatment apparatus, the activated carbon is housed in a net bag.

[0036] According to the wastewater treatment apparatus of this embodiment, since the activated carbon is accommodated in the mesh bag, the activated carbon is simply put into the micro-nano bubble generation tank and the relay tank together with the mesh bag. Can be accommodated.

[0037] Further, in the wastewater treatment apparatus of one embodiment, there are a plurality of mesh bags, and a mesh tube is provided between at least one set of adjacent mesh bags. [0038] According to the waste water treatment apparatus of this embodiment, since the mesh tube is provided between the at least one set of adjacent mesh bags, the flow of water to all the activated carbons is improved. It is possible to prevent the closure phenomenon from occurring.

[0039] In the wastewater treatment apparatus of one embodiment, the water to be treated separated in the relay tank is subjected to a precipitation treatment with a calcium agent.

[0040] According to the waste water treatment apparatus of this embodiment, the water to be treated separated in the relay tank is subjected to precipitation treatment with a calcium agent, so that high concentration fluorine in the water to be treated in the relay tank is removed. By adding the above calcium agent, it can be precipitated as harmless calcium fluoride.

[0041] In the wastewater treatment apparatus of an embodiment, a filler is accommodated in the lower water storage section of the exhaust gas treatment tank.

[0042] According to the wastewater treatment apparatus of this embodiment, since the filler is accommodated in the lower water storage section of the exhaust gas treatment tank, the microorganisms propagate in the filler, and the organic matter in the exhaust gas. The washing water that has absorbed water can be treated in the lower water reservoir. That is, the organic fluorine compound in the washing water can be decomposed by microorganisms that have propagated and become active on the filler.

[0043] In one embodiment of the waste water treatment apparatus, the filler is a polyvinyl chloride vinylidene filler.

Here, the shape of the polyvinyl chloride vinylidene filler is, for example, a string shape or a ring shape

[0045] According to the wastewater treatment apparatus of this embodiment, since the filler is a polyvinylidene chloride filler, microorganisms activated in the polysalt vinylidene filler can be cultured at a high concentration, The organofluorine compound can be treated.

[0046] Further, in the waste water treatment apparatus of one embodiment, the polysalt vinylidene filler is in a string shape.

[0047] According to the wastewater treatment apparatus of this embodiment, since the polyvinyl chloride vinylidene filler has a string shape, a large amount of the polyvinyl chloride vinylidene filler is used in the exhaust gas treatment tank. Can be accommodated in the lower reservoir. [0048] In the wastewater treatment apparatus of one embodiment, the polysalt vinylidene filler is in a ring shape.

[0049] According to the wastewater treatment apparatus of this embodiment, since the polyvinyl chloride filler is in a ring shape, the polyvinyl chloride filler is used for the lower storage of the exhaust gas treatment tank. It can be easily accommodated in the water section.

[0050] In one embodiment of the waste water treatment apparatus, the filler is activated carbon.

[0051] Here, the activated carbon is accommodated in, for example, a mesh bag, and a mesh tube is installed between the adjacent mesh bags.

[0052] According to the wastewater treatment apparatus of this embodiment, since the filler is activated carbon, the organofluorine compound adsorbed on the activated carbon can be decomposed with active microorganisms.

[0053] In one embodiment of the waste water treatment apparatus, the activated carbon is housed in a net bag.

[0054] According to the waste water treatment apparatus of this embodiment, since the activated carbon is housed in the mesh bag, the activated carbon is easily put into the lower water storage part of the exhaust gas treatment tank together with the mesh bag. Can be accommodated.

[0055] Further, in the wastewater treatment apparatus of one embodiment, there are a plurality of mesh bags, and a mesh tube is provided between at least one pair of adjacent mesh bags.

[0056] According to the wastewater treatment apparatus of this embodiment, since the mesh tube is provided between the at least one pair of adjacent mesh bags, the flow of water to all the activated carbons is improved. It is possible to prevent the closure phenomenon from occurring.

The invention's effect

According to the wastewater treatment method of the present invention, in the micro / nano bubble generation tank, microorganisms, micro / nano bubble generation aids and nutrients are added to the waste water containing the organic fluorine compound, and the micro / nano bubbles are contained. The water to be treated is prepared, and the water to be treated is supplied to an activated carbon tower filled with activated charcoal, and the organic fluorine compound in the water to be treated is decomposed by the microorganisms. Organofluorine compounds can be effectively decomposed by microorganisms.

[0058] Further, according to the waste water treatment apparatus of the present invention, a micro-nano bubble generation tank, a microbial tank A wastewater containing an organic fluorine compound is introduced into the micro / nano bubble generating tank, and the microorganisms, the micro / nano bubble generating aid and the above A nutrient solution is added and the micro-nano bubbles are contained to prepare treated water. The treated water is supplied to the activated carbon tower, and the organofluorine compound in the treated water is converted by the microorganism. Since it is decomposed, the hardly decomposable organic fluorine compound can be effectively decomposed by microorganisms. Brief Description of Drawings

FIG. 1 is a schematic view showing a first embodiment of a waste water treatment apparatus of the present invention.

FIG. 2 is a schematic view showing a second embodiment of the waste water treatment apparatus of the present invention.

FIG. 3 is a schematic view showing a third embodiment of the waste water treatment apparatus of the present invention.

FIG. 4 is a schematic view showing a fourth embodiment of the waste water treatment apparatus of the present invention.

FIG. 5 is a schematic view showing a fifth embodiment of the waste water treatment apparatus of the present invention.

FIG. 6 is a schematic view showing a sixth embodiment of the waste water treatment apparatus of the present invention.

FIG. 7 is a schematic view showing a seventh embodiment of the waste water treatment apparatus of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

[0061] (First embodiment)

FIG. 1 shows a schematic view of a first embodiment of the waste water treatment apparatus of the present invention. This wastewater treatment device contains a micro / nano bubble generation tank 1 that contains a micro / nano bubble generator 23, a microorganism tank 61 that contains microorganisms, an auxiliary tank 50 that contains micro / nano bubble generation aids, and a nutrient. And an activated charcoal tower 4 filled with activated carbon. The microorganism tank 61, the auxiliary agent tank 50, the nutrient tank 52, and the activated carbon tower 4 are connected to the micro / nano bubble generating tank 1, respectively.

[0062] Then, the wastewater containing the organic fluorine compound is introduced into the micro-nano bubble generation tank 1, the microorganism is added from the microorganism tank 61, and the micro-nano bubble generation auxiliary agent is added from the auxiliary tank 50. Added, the nutrient is added from the nutrient tank 52, and the micro / nano bubble is generated by the micro / nano bubble generator 23. The water to be treated is created.

[0063] The treated water is supplied from the micro / nano bubble generating tank 1 to the activated carbon tower 4, and the organic fluorine compound in the treated water is decomposed by the microorganism.

[0064] The microorganism tank 61 is connected to a microorganism tank pump 62 for sending the microorganisms to the micro / nano bubble generating tank 1. The auxiliary tank 50 is connected to an auxiliary tank pump 51 for sending the micro / nano bubble generating auxiliary agent to the micro / nano bubble generating tank 1. The nutrient tank 52 is connected to a nutrient tank pump ₅₃ that delivers the nutrient to the micro-nano bubble generation tank. The micro / nano bubble generation tank 1 is connected to a micro / nano bubble generation tank pump 2 for sending the water to be treated to the activated carbon tower 4.

[0065] The microorganism may be a microorganism contained in general biologically treated water, or may be a microorganism that is particularly excellent in decomposing organic fluorine compounds. Any type is acceptable.

[0066] In addition, the microorganism added from the microorganism tank 61 may be determined as a target microorganism that may be the microorganism itself or may exist in the liquid.

[0067] The micro / nano bubble generation aid refers to one that can stably maintain the generation state of micro / nano bubbles. That is, the above-mentioned micro / nano bubble generation aid generates optimal micro / nano bubbles and activates all the microorganisms that exist!

[0068] The nutrient is, for example, a nutrient that contains nitrogen or phosphorus as a main component and contains a small amount of potassium, magnesium, or calcium, and is necessary when microorganisms are activated.

[0069] An air suction pipe 25 is connected to the micro-nano bubble generator 23, and a valve 24 for adjusting the amount of air suction is connected to the air suction pipe 25. The micro / nano bubble generator 23 is connected to a circulation pump 26 for supplying water in the micro / nano bubble generator 1 to the micro / nano bubble generator 23.

[0070] The micro / nano bubble generator 23 is supplied with water from the circulation pump 26.

In addition, air is sucked from the air suction pipe 25, and water and air cause a swirling flow at an ultra-high speed. As a result, micro-nano bubbles are generated after a certain time.

[0071] The circulation pump 26 supplies water to the micro / nano bubble generator 23 in a necessary pressure state. ing. When supplied at the required pressure, micro-nano bubbles are generated efficiently. Necessary pressure means 1.5kg / cm ² or more.

[0072] The above-mentioned micro / nano bubble generator 23 is not limited to the manufacturer as long as it is commercially available. Specifically, Nano-Branet Laboratories Co., Ltd., Oratech Co., Ltd. and Nomura Electronics Co., Ltd. There are products. Other products include, for example, Nishika Sangyo Co., Ltd. micro bubble water production equipment and Resource Development Co., Ltd. micro bubble water production equipment, but they may be selected according to the purpose.

Here, the micro-nano bubble refers to a bubble having a diameter of about 10 μm force and several hundred nm. In addition, normal bubbles (bubbles) rise in the water and eventually disappear on the surface by bursting with bread. Microbubbles are bubbles having a bubble diameter of 10 m to several tens / z m, shrink in water, and eventually disappear (completely dissolve). A nano bubble is a bubble having a diameter of several hundred nm or less and can exist in water forever. And it can be said that the micro-nano bubble is a bubble in which micro-bubbles and nano-bubbles are mixed.

[0074] Then, in the micro-nano bubble generation tank 1, optimum micro-nano bubbles are generated from the micro-nano bubble generator 23 by the addition of the micro-nano bubble generation aid.

[0075] A water stream 27 is generated by the fine bubbles discharged from the micro-nano bubble generator 23, and this water stream 27 becomes a circulating water stream of the micro-nano bubble generation tank 1, and the micro-nano bubble generation tank 1 The inside is agitated. That is, the water stream 27 mixes the organic fluorine compound-containing waste water, the micro / nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.

The water to be treated in the micro / nano bubble generation tank 1 is introduced into the upper part of the activated carbon tower 4 by the micro / nano bubble generation tank pump 2 with the flow rate adjusted by a valve 49.

[0077] The activated carbon packed in the activated carbon tower 4 is, for example, coconut shell activated carbon or coal-based activated carbon. Whether to select coconut husk activated carbon or coal-based activated carbon. A physical experiment may be performed to determine the type and shape of the activated carbon or the amount of treated water introduced.

[0078] On the activated carbon in the activated carbon tower 4, microorganisms activated by the micro-nano bubbles propagate, and the microorganism decomposes the organic fluorine compound. When the organic fluorine compound is decomposed, a gas containing fluorine is generated, but the lower force of the activated carbon tower 4 flows out together with the water to be treated.

[0079] When microorganisms are not propagated on the activated carbon, the ability of the activated carbon to adsorb organic matter decreases if water is continuously introduced into the activated carbon. However, if the activity of microorganisms propagated on the activated carbon is strong, the organic matter adsorbed by the activated carbon is decomposed, and the activated carbon is also regenerated.

[0080] Conventionally, in water purification plants related to water supply, the organic matter load of influent water is low! The activated carbon has been regenerated by microorganisms, but in wastewater, the organic matter load is somewhat high, so the regeneration of the activated carbon is rare. there were.

[0081] Therefore, in the present invention, when microorganisms in the water to be treated are activated with micro-nano bubbles and propagated with the activated carbon as a fixed soot carrier, even if there is an organic load in the wastewater, it is powerful and automatic. It becomes a so-called biological activated carbon with regenerative capacity, and it does not require regeneration of the activated carbon in the activated carbon tower 4 and can reduce maintenance costs and running costs.

[0082] An exhaust gas treatment tank 9 is connected to the micro / nano bubble generation tank 1 via a duct 7. A relay tank 5 is connected to the activated carbon tower 4 and the exhaust gas treatment tank 9. That is, the relay tank 5 is connected to the activated carbon tower 4 via a pipe, and is connected to the exhaust gas treatment tank 9 via a duct 7.

The activated carbon tower 4 has a branch pipe on the downstream side, and one side of the branch pipe is connected to the relay tank 5 via the relay tank automatic valve 3a, and the other side of the branch pipe is connected. The side is connected to the micro / nano bubble generation tank 1 through the automatic valve 3b for the micro / nano bubble generation tank.

[0084] The treated water discharged from the activated carbon tower 4 and the exhaust gas containing fluorine are high if the quality of the treated water is good and the organic fluorine compound is decomposed. The automatic valve 3a for the relay tank is opened and the valve 3b for the micro / nano bubble generating tank is closed and introduced into the relay tank 5.

Specifically, if the quality of the water to be treated is poor, the organic fluorine compound is sufficiently decomposed, and the quality of the water introduced into the relay tank 5 is poor. The treated water foams, and the bubbles rise inside the above-mentioned middle tank I. Finally, the middle tank

When the electrode rod 60 in 5 is touched, the relay tank automatic valve 3a is closed, and the micro-nano bubble generation tank valve 3b is opened.

[0086] Conversely, if the organofluorine compound with good quality of the water to be treated is decomposed, the relay tank 5 automatic valve 3a is opened without causing the inside of the relay tank 5 to foam, and the micro The nanobubble generation tank-bound valve 3b is closed, and the water to be treated and the exhaust gas are sequentially introduced into the relay tank 5.

That is, the relay tank 5 has an aeration unit 65. The aeration unit 65 includes an air diffuser 58 in the relay tank 5 and a blower 59 that sends air to the air diffuser 58. By the aeration unit 65, the water to be treated is bubbled.

[0088] The treated water exiting the relay tank 5 is treated in the next-stage wastewater treatment facility according to the content of the treated water (that is, water quality). This wastewater treatment facility in the next process is often treated with fluorine-containing wastewater.

On the other hand, the exhaust gas 6 containing fluorine in the micro / nano bubble generation tank 1 and the relay tank 5 (indicated by an arrow) is introduced into the exhaust gas treatment tank 9 by the fan 8 via the duct 7. The

[0090] Thus, the water to be treated and the exhaust gas that have passed through the activated carbon tower 4 are introduced into the relay tank 5 and separated into the water to be treated and the exhaust gas. It is introduced into the exhaust gas treatment tank 9.

The exhaust gas treatment tank 9 houses a micro / nano bubble generator 12. Connected to the exhaust gas treatment tank 9 are a microorganism tank 63 for storing microorganisms, an auxiliary tank 54 for storing micro-nano bubble generation auxiliary agents, and a nutrient tank 56 for storing nutrients. The microorganism tank 63, the auxiliary agent tank 54, and the nutrient tank 56 are the same as the microorganism tank 61, the auxiliary tank 50, and the nutrient tank 52. I will omit the description.

The microorganism tank 63 is connected to a microorganism tank pump 64 for sending the microorganisms to the exhaust gas treatment tank 9. The auxiliary tank 54 is connected to an auxiliary tank pump 55 for sending the micro / nano bubble generating auxiliary agent to the exhaust gas treatment tank 9. The nutrient tank 56 is connected to a nutrient tank pump 57 that delivers the nutrient to the exhaust gas treatment tank 9.

[0093] The water introduced into the exhaust gas treatment tank 9 is added with the microorganism from the microorganism tank 63, added with the micro-nano bubble generating assistant from the assistant tank 54, and the nutrient tank. The nutrient solution is added from 56 and the micro-nano bubbles are contained by the micro-nano bubble generator 12 to create washing water.

[0094] The exhaust gas generated by decomposing the organic fluorine compound in the water to be treated by the microorganisms in the activated carbon tower 4 is introduced into the exhaust gas treatment tank 9 and treated with the washing water. .

[0095] The exhaust gas treatment tank 9 includes a lower water storage part 11 disposed in the lower part and an upper watering part 10 disposed in the upper part.

[0096] The lower water storage unit 11 houses the micro / nano bubble generator 12 and stores the washing water. The upper water sprinkling unit 10 sprinkles the washing water pumped up from the lower water storage unit 11.

[0097] The wash water sprayed from the upper water sprinkling unit 10 cleans the exhaust gas, is stored in the lower water storage unit 11, and is pumped again to the upper water sprinkling unit 10 via the water spray pump 17. Raised.

The upper water sprinkling unit 10 includes a porous plate 18, a plastic filler 19 (for example, trade name Teralet) and a watering nozzle 20 in order from the bottom to the top. The upper watering part 10 is provided with an exhaust outlet 22 at the upper part of the watering nozzle 20.

[0099] The exhaust gas containing fluorine flows into the exhaust gas treatment tank 9 from the duct 7 provided between the upper watering part 10 and the lower water storage part 11, and the watering nozzle 20 Then, the water is washed with the washing water sprayed and discharged from the exhaust outlet 22.

[0100] In the lower water reservoir 11, the micro-nano bubble generator 12 is accommodated. Up Since the micro / nano bubble generator 12 has the same configuration as the micro / nano bubble generator 23, the description thereof is omitted.

[0101] An air suction pipe 14 is connected to the micro-nano bubble generator 12, and a valve 13 for adjusting the amount of air suction is connected to the air suction pipe 14. The micro / nano bubble generator 12 is connected to a circulation pump 15 that supplies water in the exhaust gas treatment tank 9 to the micro / nano bubble generator 12.

[0102] The micro-nano bubble generator 12 is supplied with water from the circulation pump 15.

In addition, air is sucked in from the air suction pipe 14, and water and air cause a swirling flow at an ultra high speed. As a result, micro-nano bubbles are generated after a certain time.

[0103] In the exhaust gas treatment tank 9, optimum micro / nano bubbles are generated after a certain time from the micro / nano bubble generator 12 by the addition of the micro / nano bubble generation aid.

A water stream 16 is generated by the fine bubbles discharged from the micro / nano bubble generator 12, and this water stream 16 becomes a circulating water stream of the exhaust gas treatment tank 9, and the inside of the exhaust gas treatment tank 9 is agitated. is doing. That is, the water stream 16 mixes the organic fluorine compound-containing waste water, the micro / nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.

[0105] The washing water in the lower water storage part 11 is washed by the watering pump 17 to the washing water pipe.

Water is sprayed from the watering nozzle 20 of the upper watering part 10 via 21.

[0106] When the washing water containing the micro-nano bubbles is compared with the washing water that does not contain the micro-nano bubbles, the direction of the washing water containing the micro-nano bubbles has a good removal rate of the organic fluorine compound. It was confirmed by experiments.

[0107] The reason for this is considered to be an increase in the cleaning effect on dirt components in the cleaning water gas containing micro-nano bubbles.

Therefore, when an organic fluorine compound that is easily evaporated or gasified is generated, it is absorbed in the washing water and decomposed by the microorganisms activated by the micro / nano bubbles in the lower water storage section 11. [0109] The cleaning water in the exhaust gas treatment tank 9 is reduced by evaporation or scattering from the exhaust outlet 22 with the start of operation, but the makeup water is automatically replenished (not shown). ) A ball tap is installed to automatically replenish makeup water and maintain the liquid level of the lower water reservoir 11. Note that the exhaust gas containing fluorine treated in the exhaust gas treatment tank 9 is dissolved in the washing water, and the washing water becomes fluorine-containing waste water, and the fluorine is treated in the waste water treatment facility in the next process.

[0110] Next, a method of treating wastewater using the wastewater treatment apparatus having the above configuration will be described.

[0111] In the micro / nano bubble generation tank 1, to-be-treated water is prepared by adding microorganisms, micro / nano bubble generation aids and nutrients to the waste water containing the organic fluorine compound and containing micro / nano bubbles.

[0112] Thereafter, the water to be treated is supplied from the micro / nano bubble generating tank 1 to the activated carbon tower 4 filled with activated carbon, and the organic fluorine compound in the water to be treated is decomposed by the microorganisms.

[0113] According to the wastewater treatment apparatus having the above-described configuration, the micro-nano bubble generation tank 1, the microorganism tank 61, the auxiliary agent tank 50, the nutrient tank 52, and the activated carbon tower 4 are provided. Then, the wastewater containing the organic fluorine compound is introduced into the micro / nano bubble generation tank 1 to which the microorganism, the micro / nano bubble generation aid and the nutrient are added, and the micro / nano bubble is contained and covered. Treated water is prepared, and the treated water is supplied from the micro / nano bubble generation tank 1 to the activated carbon tower 4 and the organic fluorine compound in the treated water is decomposed by the microorganisms. And the activated carbon of the activated carbon tower 4 which is an immobilization carrier for the microorganisms, and is further activated by the micro-nano bubbles and the nutrient, The machine fluorine compound can reasonably be decomposed. In addition, by adding the micro / nano bubble generation aid, an optimal amount of the micro / nano bubbles that activate the microorganism can be generated.

[0114] Therefore, a hardly decomposable organic fluorine compound (for example, perfluorotasulfonic acid)

[0115] Further, the exhaust gas treatment tank 9, the microorganism tank 63, the auxiliary agent tank 54, and the honor The water introduced into the exhaust gas treatment tank 9 is added with the microorganism, the micro-nano bubble generation aid and the nutrient, and contains the micro-nano bubble, and the washing water Since the exhaust gas is treated with the washing water, the fluorine in the exhaust gas can be rationally treated with the activated microorganisms in the washing water.

[0116] Further, since the treated water and the exhaust gas that have passed through the activated carbon tower 4 are introduced into the relay tank 5 having the aeration unit 65 and separated into the treated water and the exhaust gas, The water to be treated and the exhaust gas can be reliably treated individually.

[0117] Further, the washing water sprayed from the upper watering part 10 is washed with the exhaust gas, stored in the lower water storage part 11, and pumped up again into the upper watering part 10. Can be circulated between the upper watering part 10 and the lower water storage part 11 for use.

[0118] (Second Embodiment)

FIG. 2 shows a second embodiment of the waste water treatment apparatus of the present invention. The difference from the first embodiment shown in FIG. 1 will be described. In the second embodiment, a micro / nano bubble generator 28 is accommodated in the relay tank 5. In the second embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0119] The micro / nano bubble generator 28 has the same configuration as the micro / nano bubble generator 23 of the first embodiment shown in FIG.

[0120] An air suction pipe 30 is connected to the micro / nano bubble generator 28, and a valve 29 for adjusting the amount of air suction is connected to the air suction pipe 30. The micro / nano bubble generator 28 is connected to a circulation pump 31 for supplying water in the relay tank 5 to the micro / nano bubble generator 28.

[0121] Then, the micro / nano bubble generator 28 is supplied with water from the circulation pump 31 and sucks air from the air suction pipe 30, so that water and air cause a swirling flow at an ultra-high speed, resulting in a result. Thus, micro-nano bubbles are generated after a certain time.

[0122] In the above-mentioned «I tank 5, the above-mentioned micro / nano bubble generation aid is added to the above-mentioned my From the black nano bubble generator 28, the optimum micro / nano bubbles are generated.

[0123] By the fine bubbles discharged from the micro / nano bubble generator 28, a water flow 32 is generated, and this water flow 32 becomes a circulating water flow of the relay tank 5 and stirs in the relay tank 5. Yes. That is, the water stream 32 mixes the organic fluorine compound-containing waste water, the micro-nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.

[0124] In addition, the treated water containing the micro-nano bubbles does not contain the treated water, which has a better removal rate of the organic fluorine compound than the treated water. It was confirmed more.

[0125] This is because the water to be treated containing micro-nano bubbles activates microorganisms by micro-nano bubbles and decomposes the remaining organic fluorine compound.

[0126] Further, the micro / nano bubble generator 28 secures the necessary amount of air from the nozzle 29 and the air suction pipe 30 in order to generate micro / nano bubbles. The treated water from the relay tank 5 is treated in the next process treatment facility depending on the water quality.

[0127] Therefore, since the micro-nano bubble generator 28 is accommodated in the relay tank 5, the microorganisms in the water to be treated are activated in the relay tank 5, and the activated microorganisms The organic fluorine compound remaining in the water to be treated can be further decomposed.

[0128] (Third embodiment)

FIG. 3 shows a third embodiment of the waste water treatment apparatus of the present invention. The difference from the first embodiment shown in FIG. 1 will be explained. In the third embodiment, the micro-nano bubble generating tank 1 contains a string-like polysalt / vinylidene filler 33 as a filler. It has been. Further, the water to be treated separated in the relay tank 5 is treated with the chelate resin of the chelate resin tower. In the third embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0129] Therefore, the micro-nano bubble generation tank 1 contains the string-like polysalt / biurydene filler 33, so that the microorganisms activated by the micro-nano bubbles are not contained. The cord-like polysalt-vinylidene filler 33 can be propagated while being fixed. In addition, the microorganisms activated in the cord-like polysalt / bilidene filler 33 can be cultured at a high concentration, and the organic fluorine compound can be primarily treated. In addition, many of the string-like polyvinylidene chloride fillers 33 can be accommodated in the micro / nano bubble generating tank 1.

[0130] Further, since the water to be treated separated in the relay tank is treated with chelate resin, low concentration fluorine in the water to be treated in the relay tank 5 is highly treated with chelate resin. It can be processed.

[0131] (Fourth embodiment)

FIG. 4 shows a fourth embodiment of the waste water treatment apparatus of the present invention. The difference from the first embodiment shown in FIG. 1 will be described. In the fourth embodiment, activated carbon 35 as a filler is accommodated in the micro / nano bubble generating tank 1. Further, the water to be treated separated in the relay tank 5 is subjected to a precipitation treatment with a calcium agent in a calcium agent-added coagulating sedimentation facility. Note that, in the fourth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0132] The activated carbon 35 is accommodated in a mesh bag 34, and there are a plurality of mesh bags 34, and a mesh tube 36 is provided between at least one pair of the adjacent mesh bags 34, 34. . The mesh bag 34 and the mesh tube 36 are accommodated in a perforated plate 37 installed in the micro / nano bubble generating tank 1.

[0133] Therefore, the organic fluorine compound adsorbed on the activated carbon 35 can be decomposed with activated microorganisms. That is, the activated carbon 35 can be regenerated by the activated microorganisms. Further, since the activated carbon 35 is accommodated in the mesh bag 34, the activated carbon 35 can be easily accommodated in the micro / nano bubble generating tank 1 together with the mesh bag 34. In addition, since the mesh tube 36 is provided between the at least one pair of the adjacent mesh bags 34, 34, the flow of water to all the activated carbons 35 is improved, and the occurrence of a clogging phenomenon is prevented. Can be prevented.

[0134] Further, since the water to be treated separated in the relay tank 5 is precipitated with a calcium agent, high-concentration fluorine in the water to be treated in the relay tank 5 is added to the calcium agent. Thus, it can be precipitated as harmless calcium fluoride. [0135] (Fifth embodiment)

FIG. 5 shows a fifth embodiment of the waste water treatment apparatus of the present invention. The difference from the first embodiment shown in FIG. 1 will be described. In the fifth embodiment, a micro / nano bubble generator 28 is accommodated in the relay tank 5. The relay tank 5 accommodates a string-like polyvinylidene filler 33 as a filler. In the fifth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0136] The micro / nano bubble generator 28 has the same configuration as the micro / nano bubble generator 23 of the first embodiment shown in FIG.

[0137] An air suction pipe 30 is connected to the micro / nano bubble generator 28, and a valve 29 for adjusting the air suction amount is connected to the air suction pipe 30. The micro / nano bubble generator 28 is connected to a circulation pump 31 for supplying water in the relay tank 5 to the micro / nano bubble generator 28.

[0138] Then, the micro / nano bubble generator 28 is supplied with water from the circulation pump 31 and sucks air from the air suction pipe 30, so that water and air cause a swirling flow at an ultra-high speed, resulting in a result. Micro-nano bubbles are generated.

[0139] In the middle tank I, optimal micro / nano bubbles are generated from the micro / nano bubble generator 28 by the addition of the micro / nano bubble generation aid.

[0140] By the fine bubbles discharged from the micro / nano bubble generator 28, a water stream 32 is generated, and this water stream 32 becomes a circulating water stream of the relay tank 5, and the inside of the relay tank 5 is stirred. Yes. That is, the water stream 32 mixes the organic fluorine compound-containing waste water, the micro-nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.

[0141] In addition, the treated water containing michro nano bubbles does not contain, but compared to the treated water, the treated water contained in the treated water had a better removal rate of the organic fluorine compound. It was confirmed more.

[0142] This is because the water to be treated containing micro-nano bubbles activates microorganisms by micro-nano bubbles and decomposes the remaining organic fluorine compound. [0143] Further, the micro / nano bubble generator 28 secures the necessary amount of air from the nozzle 29 and the air suction pipe 30 in order to generate micro / nano bubbles. The treated water from the relay tank 5 is treated in the next process treatment facility depending on the water quality.

[0144] Therefore, since the micro / nano bubble generator 28 is accommodated in the relay tank 5, the microorganisms in the water to be treated are activated in the relay tank 5, and the activated microorganisms The organic fluorine compound remaining in the water to be treated can be further decomposed.

[0145] In addition, since the string-like polysalt bililidene filler 33 is accommodated in the relay tank 5, the microorganisms activated by the micro-nano bubbles are removed from the cord-like polysalt polysalt- Can be bred while being fixed to Reden Filler 33. In addition, microorganisms activated in the string-like polyvinylidene chloride filler 33 can be cultured at a high concentration, and the treatment efficiency of the treated water can be increased. Further, many of the above-mentioned cord-like polysalt vinylidene fillers 33 can be accommodated in the relay tank 5.

[0146] (Sixth embodiment)

FIG. 6 shows a sixth embodiment of the waste water treatment apparatus of the present invention. The difference from the first embodiment shown in FIG. 1 will be described. In the sixth embodiment, a micro / nano bubble generator 28 is accommodated in the relay tank 5. The relay tank 5 contains activated carbon 35 as a filler. Note that, in the sixth embodiment, the same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0147] The micro / nano bubble generator 28 has the same configuration as the micro / nano bubble generator 23 of the first embodiment shown in FIG.

[0148] An air suction pipe 30 is connected to the micro / nano bubble generator 28, and a valve 29 for adjusting the air suction amount is connected to the air suction pipe 30. The micro / nano bubble generator 28 is connected to a circulation pump 31 for supplying water in the relay tank 5 to the micro / nano bubble generator 28.

[0149] Then, the micro-nano bubble generator 28 is supplied with water from the circulation pump 31 and sucks air from the air suction pipe 30, so that the water and air swirl at an ultra-high speed. As a result, micro-nano bubbles are generated after a certain time.

[0150] In the middle tank I, optimal micro / nano bubbles are generated from the micro / nano bubble generator 28 by the addition of the micro / nano bubble generation aid.

[0151] The water flow 32 is generated by the fine bubbles discharged from the micro / nano bubble generator 28, and this water flow 32 becomes a circulating water flow of the relay tank 5 and stirs in the relay tank 5. Yes. That is, the water stream 32 mixes the organic fluorine compound-containing waste water, the micro-nano bubble generation aid, the microorganisms, and the nutrient. Microorganisms activated by micro-nano bubbles are further activated by the addition of the above nutrients.

[0152] In addition, in the experiment, it was found that the water to be treated containing the michro nanobubbles had a better removal rate of the organic fluorine compound than the water to be treated. It was confirmed more.

[0153] This is because the water to be treated containing micro-nano bubbles activates microorganisms by the micro-nano bubbles and decomposes the remaining organic fluorine compound.

[0154] Further, the micro / nano bubble generator 28 secures the necessary amount of air from the nozzle 29 and the air suction pipe 30 in order to generate micro / nano bubbles. The treated water from the relay tank 5 is treated in the next process treatment facility depending on the water quality.

[0155] Therefore, since the micro-nano bubble generator 28 is accommodated in the relay tank 5, the microorganisms in the water to be treated are activated in the relay tank 5, and the activated microorganisms The organic fluorine compound remaining in the water to be treated can be further decomposed.

[0156] Further, the activated carbon 35 is accommodated in a mesh bag 34, and there are a plurality of mesh bags 34, and a mesh tube 36 is provided between at least one pair of the adjacent mesh bags 34, 34. Is provided. The mesh bag 34 and the mesh tube 36 are accommodated in a perforated plate 37 installed in the relay tank 5.

[0157] Therefore, the organic fluorine compound adsorbed on the activated carbon 35 can be decomposed with activated microorganisms. That is, the activated carbon 35 can be regenerated by the activated microorganisms. Further, since the activated carbon 35 is accommodated in the mesh bag 34, the activated carbon 35 can be easily accommodated in the relay tank 5 together with the mesh bag 34. In addition, since the mesh tube 36 is provided between the at least one pair of the adjacent mesh bags 34, 34, the flow of water to all the activated carbon 35 is improved to prevent the occurrence of a clogging phenomenon. it can.

[Seventh Embodiment]

FIG. 7 shows a seventh embodiment of the waste water treatment apparatus of the present invention. The difference from the first embodiment shown in FIG. 1 will be described. In the seventh embodiment, the lower water reservoir 11 of the exhaust gas treatment tank 9 has a string-like polyvinyl chloride as a filler. Reden filler 33 is contained. Note that, in the seventh embodiment, the same portions as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

[0159] Therefore, since the string-like polysalt / vinylidene filler 33 is accommodated in the exhaust gas treatment tank 9, the microorganisms activated by the micro / nano bubbles are treated with the string-like polysalt / salt. It can be propagated while being fixed to the biliden filler 33.

[0160] Therefore, since the microorganism concentration is increased and the microorganisms are active, when the exhaust gas containing fluorine is sprinkled, organic substances that are absorbed and transferred to the washing water can be efficiently treated with microorganisms at the same time. .

[0161] That is, the organic fluorine compound gasified in the process of decomposing the organic fluorine compound is absorbed by washing with the washing water, and microorganisms are produced by the active microorganisms propagated on the string-like polysalt / vinylidene filler 33. Decompose.

[0162] In addition, a large number of the cord-like polysalt vinylidene fillers 33 can be accommodated in the upper and lower water storage portions 11 of the exhaust gas treatment tank 9.

[0163] (Experimental example)

An experimental device corresponding to the first embodiment of FIG. 1 was manufactured. In this experimental apparatus, the capacity of the micro-nano bubble generation tank 1 is about lm ³ , the capacity of the activated carbon tower 4 is 2 m ³ , the capacity of the relay tank 5 is lm ^3, and the entire exhaust gas treatment tank 9 is used. as about 3m ³ capacity, 1 month, the micro-nano bubble generation tank 1, the activated carbon tower 4, Na' Oko commissioning by introducing an organic fluorine compound-containing waste water and biologically treated water in the relay tank 5 and the exhaust gas treatment tank 9 It was.

[0164] After trial run, PFOS (perfluoro The concentration of octanesulfone powder) and the concentration of PFOS at the outlet of the relay tank 5 were measured, and the removal rate of PFOS was measured and found to be 92%. In other words, persistent PFOS can be effectively decomposed by microorganisms.

In addition, this invention is not limited to the above-mentioned embodiment. For example, in the third, fifth, and seventh embodiments, the ring-shaped polysalt vinylidene filler may be used in place of the string-like polysalt vinylidene filler 33. The polyvinylidene filler can be easily accommodated in the micro / nano bubble generation tank 1, the relay tank 5 and the exhaust gas treatment tank 9. In the first to seventh embodiments, the micro-nano bubble generating tank 1, the relay tank 5 and the exhaust gas treatment tank 9 are connected to the string-like polysalt vinyl-redenid filler 33 and Use activated carbon 35 above.

Claims

The scope of the claims

[1] In the micro / nano bubble generation tank, water to be treated was prepared by adding microorganisms, micro nano bubble generation aids and nutrients to the wastewater containing the organic fluorine compound, and containing micro / nano bubbles.

A wastewater treatment method, wherein the treated water is supplied to an activated carbon tower filled with activated carbon, and the organic fluorine compound in the treated water is decomposed by the microorganism.

[2] a micro / nano bubble generation tank containing a micro / nano bubble generator;

Wastewater containing an organic fluorine compound is introduced into the micro-nano bubble generation tank, the microorganism is added from the microorganism tank, the micro-nano bubble generation auxiliary is added from the auxiliary tank, and the micro-bubble generation auxiliary is added from the nutrient tank. When nutrients are added, the micro / nano bubbles are contained by the micro / nano bubble generator to create water to be treated,

The waste water treatment apparatus, wherein the treated water is supplied to the activated carbon tower, and the organic fluorine compound in the treated water is decomposed by the microorganisms.

[3] In the waste water treatment apparatus according to claim 2,

An exhaust gas treatment tank containing a micro / nano bubble generator and connected to the micro / nano bubble generation tank;

A microorganism tank that contains microorganisms and is connected to the exhaust gas treatment tank, and an auxiliary that contains the micro / nano bubble generation aid and is connected to the exhaust gas treatment tank. Agent tank,

Waste water treatment characterized in that exhaust gas generated by decomposing the organofluorine compound in the water to be treated by the microorganism in the activated carbon tower is introduced into the exhaust gas treatment tank and treated with the washing water. apparatus.

[4] In the waste water treatment apparatus according to claim 3,

A relay tank having an aeration section and connected to the activated carbon tower and the exhaust gas treatment tank;

The treated water and the exhaust gas that have passed through the activated carbon tower are introduced into the relay tank and separated into the treated water and the exhaust gas,

The waste gas treatment apparatus, wherein the exhaust gas is introduced into the exhaust gas treatment tank.

[5] The waste water treatment apparatus according to claim 3,

The exhaust gas treatment tank is

A lower water storage part that is disposed in the lower part and houses the micro / nano bubble generator and stores the washing water;

Have

The waste water treatment apparatus, wherein the washing water sprayed from the upper watering part cleans the exhaust gas, is stored in the lower water storage part, and is pumped up again to the upper watering part.

[6] The waste water treatment apparatus according to claim 2,

Drainage characterized by containing a filler in the micro / nano bubble generation tank Processing equipment.

[7] The waste water treatment apparatus according to claim 4,

A wastewater treatment apparatus, wherein a micro / nano bubble generator is accommodated in the relay tank.

[8] The waste water treatment apparatus according to claim 7,

A wastewater treatment apparatus, wherein a filler is accommodated in the relay tank.

[9] The waste water treatment apparatus according to claim 6 or 8,

The waste water treatment apparatus, wherein the filler is a polysalt vinylidene filler.

[10] The waste water treatment apparatus according to claim 9,

The waste water treatment apparatus characterized in that the polysalt vinylidene filler has a string shape.

[11] The waste water treatment apparatus according to claim 4,

The waste water treatment apparatus characterized in that the water to be treated separated in the relay tank is treated with chelate resin.

[12] The waste water treatment apparatus according to claim 6 or 8,

The waste water treatment apparatus, wherein the filler is activated carbon.

[13] The waste water treatment apparatus according to claim 12,

The activated carbon is housed in a net bag.

[14] In the waste water treatment apparatus according to claim 13,

There are multiple mesh bags,

A wastewater treatment apparatus, characterized in that a net-like tube is provided between at least one pair of adjacent net bags.

[15] The waste water treatment apparatus according to claim 4,

The wastewater treatment apparatus, wherein the water to be treated separated in the relay tank is precipitated with a calcium agent.

[16] In the waste water treatment apparatus according to claim 5,

A waste water treatment apparatus, wherein a filler is accommodated in the lower water storage part of the exhaust gas treatment tank.

[17] The waste water treatment apparatus according to claim 16, The waste water treatment apparatus, wherein the filler is a polysalt vinylidene filler.

[18] The waste water treatment apparatus according to claim 17,

[19] The waste water treatment apparatus according to claim 17,

The waste water treatment apparatus according to claim 1, wherein the polysalt vinylidene filler has a ring shape.

[20] The waste water treatment apparatus according to claim 16,

The waste water treatment apparatus, wherein the filler is activated carbon.

[21] The waste water treatment apparatus according to claim 20,

The activated carbon is housed in a net bag.

[22] The waste water treatment apparatus according to claim 21, wherein

There are multiple mesh bags,